Data Disappeared

Bought 5GB+5GB FREE at R159 (7 days) yesterday after lunch for my mobile phone. On average l spend that much data for a week, and most of the time the data actually expires on the 7th day without being used. So l wake up today and get a notification that l am left with 1GB. I contact Vodacom via Twitter, and give them the details and they eventually called and we had a discussion around this! Turns out they can't explain how this happened except to insinuate that l am not conversant with how an iPhone functions! What a ****** insult! Their flimsy claim is that by browsing websites, the data was spent! What a load of bull****! I am no kid, l know my phone, and l know how ****** expensive Vodacom data is! I have been a customer for just about a decade and this is **** treatment l receive as a THANK YOU for your loyalty! Well this is nonsense and I NEED my data back! Glad this damn contract expires next month - l am not renewing it! Done with this nonsense! I have completed at least 5 contracts under Vodacom only to be shown the middle finger! Well ***** this ****! GIVE ME MY DATA BACK! YOU HAVE LOST A LOYAL CUSTOMER